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S32 SDK
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Driver examples showing the basic usage scenario of the CMP
The purpose of this demo application is to show you how to use the Analog Comparator of the S32K148 MCU using the S32 SDK API.
The Comparator is configured to compare analog input 0(AIN0) with half the reference voltage generated with the internal DAC. Based on the input from the potentiometer the LEDs light by the following rules:
The run the example you will need to have the following items:
The following boards are supported by this application:
The following connections must be done to for this example application to work:
PIN FUNCTION | S32K148EVB-Q100 | S32K148-MB |
---|---|---|
RED_LED (PTD15) | RGB_RED - wired on the board | J12.17 - J11.31 |
GREEN_LED (PTD16) | RGB_GREEN - wired on the board | J12.16 - J11.30 |
CMP Input 0 (PTA0) | J4.14 - J5.7 | J21.1 - J9.31 |
After opening S32 Design Studio, go to File -> New S32DS Project From... and select cmp_dac_s32k148. Then click on Finish.
The project should now be copied into you current workspace.
First go to Project Explorer View in S32 DS and select the current project(cmp_dac_s32k148). Then go to Project and click on Generate Processor Expert Code
Wait for the code generation to be completed before continuing to the next step.
Select the configuration to be built FLASH (Debug_FLASH) or RAM (Debug_RAM) by left clicking on the downward arrow corresponding to the build button(. Wait for the build action to be completed before continuing to the next step.
Go to Run and select Debug Configurations. There will be four debug configurations for this project:
Configuration Name | Description |
---|---|
cmp_dac_s32k148 Debug_RAM Jlink | Debug the RAM configuration using Segger Jlink debuggers |
cmp_dac_s32k148 Debug_FLASH Jlink | Debug the FLASH configuration using Segger Jlink debuggers |
cmp_dac_s32k148 Debug_RAM PEMicro | Debug the RAM configuration using PEMicro debuggers |
cmp_dac_s32k148 Debug_FLASH PEMicro | Debug the FLASH configuration using PEMicro debuggers |
Select the desired debug configuration and click on Launch. Now the perspective will change to the Debug Perspective.
Use the controls to control the program flow.